The speedo in my truck (1952) never had a needle (that I can recall or find anyway).

I bought a new needle from Jim Carters... but the new needle has a big open back which doesn't attach to the spindle of the speedo... so it seems that I'm missing a piece.

Does anyone know what that piece is and where I can find one? I hunted around at the hardware store for something to "fake" it to no avail.

Thanks.